What to Plant in March — Zone 6

Start seeds indoors — Counted back from the last frost so transplants are ready on time.

🥬 Lettuce	Feb 27 – Mar 13	45–60 days to maturity
🥬 Kale	Feb 27 – Mar 13	55–65 days to maturity
🌈 Swiss Chard	Mar 6 – Mar 20	50–60 days to maturity
🍃 Collard Greens	Feb 27 – Mar 13	60–75 days to maturity
🥦 Broccoli	Feb 20 – Mar 6	60–75 days to maturity
🥦 Cauliflower	Feb 20 – Mar 6	60–80 days to maturity
🥬 Brussels Sprouts	Feb 27 – Mar 13	90–110 days to maturity
🥒 Cucumbers	Mar 13 – Mar 20	50–70 days to maturity
🥒 Zucchini	Mar 13 – Mar 20	45–60 days to maturity
🎃 Winter Squash	Mar 13 – Mar 20	85–110 days to maturity
🎃 Pumpkins	Mar 13 – Mar 20	90–110 days to maturity
🍉 Watermelon	Mar 13 – Mar 20	75–95 days to maturity
🍈 Cantaloupe	Mar 13 – Mar 20	75–90 days to maturity
🌶️ Okra	Mar 13 – Mar 20	55–65 days to maturity
🌿 Basil	Feb 27 – Mar 13	30–60 days to maturity
🌸 Zinnias	Mar 13 – Mar 20	60–70 days to maturity
🏵️ Marigolds	Feb 27 – Mar 13	50–60 days to maturity

Transplant outdoors — Set out sturdy transplants during these windows.

🥬 Lettuce	Mar 13 – Mar 27	45–60 days to maturity
🥬 Kale	Mar 13 – Mar 27	55–65 days to maturity
🌈 Swiss Chard	Mar 27 – Apr 10	50–60 days to maturity
🍃 Collard Greens	Mar 13 – Mar 27	60–75 days to maturity
🥬 Cabbage	Mar 13 – Mar 27	65–85 days to maturity
🥦 Broccoli	Mar 20 – Apr 3	60–75 days to maturity
🥦 Cauliflower	Mar 27 – Apr 10	60–80 days to maturity
🧅 Onions	Feb 27 – Mar 13	90–110 days to maturity
🧅 Leeks	Mar 13 – Mar 27	100–120 days to maturity
🌿 Parsley	Mar 27 – Apr 10	70–90 days to maturity
🌱 Chives	Mar 27 – Apr 10	75–85 days to maturity

Direct sow — Seeds straight into garden soil.

🫛 Peas	Feb 27 – Mar 13	55–70 days to maturity
🥬 Lettuce	Mar 13 – Apr 10	45–60 days to maturity
🍃 Spinach	Feb 27 – Mar 13	40–50 days to maturity
🥬 Kale	Mar 13 – Mar 27	55–65 days to maturity
🌿 Arugula	Mar 6 – Mar 20	30–40 days to maturity
🌈 Swiss Chard	Mar 27 – Apr 10	50–60 days to maturity
🍃 Collard Greens	Mar 27 – Apr 10	60–75 days to maturity
🥬 Kohlrabi	Mar 13 – Mar 27	45–60 days to maturity
🥕 Carrots	Mar 20 – Apr 10	60–75 days to maturity
🫒 Beets	Mar 13 – Mar 27	50–65 days to maturity
🌶️ Radishes	Mar 6 – Mar 20	22–30 days to maturity
🥔 Turnips	Mar 13 – Mar 27	40–55 days to maturity
🥕 Parsnips	Mar 20 – Apr 10	100–120 days to maturity
🧅 Onions	Mar 13 – Mar 27	90–110 days to maturity
🧅 Scallions	Mar 13 – Mar 27	60–70 days to maturity
🥔 Potatoes	Mar 13 – Mar 27	70–100 days to maturity
🥬 Bok Choy	Mar 20 – Apr 3	45–55 days to maturity
🌿 Mustard Greens	Mar 13 – Mar 27	35–45 days to maturity
🌿 Cilantro	Mar 20 – Apr 3	45–55 days to maturity
🌿 Parsley	Mar 27 – Apr 10	70–90 days to maturity
🌾 Dill	Mar 27 – Apr 10	40–55 days to maturity
🌱 Chives	Mar 27 – Apr 10	75–85 days to maturity

Windows use zone 6's typical frost dates (Apr 10 / Oct 22). For your own city's dates, run the frost lookup — the planting calendar then localizes everything automatically.